I caught an interesting Greenfinch this morning at Bestwood. Along with the other ageing criteria to indicate it was a bird hatched last year, it had kindly replaced T5 on one side only, nicely demonstrating the difference in wear and shape. The new adult type feather with a broadly rounded tip of outer web comparing nicely with the tapering off tip of the outer web on the juvenile type feather.
Also of interest was something you don't often get in a mist net - an adult Jackdaw.
Mick P
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